Nonlocal interactions in doped cuprates: correlated motion of Zhang-Rice polarons

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dc.creatorHozoi, L.
dc.creatorNishimoto, S.
dc.creatorKalosakas, G.
dc.creatorBodea, D. B.
dc.creatorBurdin, S.
dc.date2006-05-23
dc.date.accessioned2026-07-07T08:00:05Z
dc.date.available2026-07-07T08:00:05Z
dc.descriptionIn-plane, inter-carrier correlations in hole doped cuprates are investigated by ab initio multiconfiguration calculations. The dressed carriers display features that are reminiscent of both Zhang-Rice (ZR) CuO4 singlet states and Jahn-Teller polarons. The interaction between these quasiparticles is repulsive. At doping levels that are high enough, the interplay between long-range unscreened Coulomb interactions and long-range phase coherence among the O-ion half-breathing vibrations on the ZR plaquettes may lead to a strong reduction of the effective adiabatic energy barrier associated to each polaronic state. Tunneling effects cannot be neglected for a relatively flat, multi-well energy landscape. We suggest that the coherent, superconducting quantum state is the result of such coherent quantum lattice fluctuations involving the in-plane O ions. Our findings appear to support models where the superconductivity is related to a lowering of the in-plane kinetic energy.
dc.identifierhttps://arxiv.org/abs/cond-mat/0605578
dc.identifierhttp://arxiv.org/abs/cond-mat/0605578
dc.identifierPhys. Rev. B 75, 024517 (2007)
dc.identifierdoi:10.1103/PhysRevB.75.024517
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/128595
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleNonlocal interactions in doped cuprates: correlated motion of Zhang-Rice polarons
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